package com.atguigu.gulimall.ware.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class MyRabbitConfig {

    /**
     * 使用JSON序列化机制，进行消息转换
     * @return
     */
    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }

    /**
     * 第一次连接上RabbitMQ 消息队列的时候 监听消息 没有的组件 就会自动创建
     * @param message
     */
//    @RabbitListener(queues = "stock.release.stock.queue")
//    public void handle(Message message){
//    }

    /**
     * 库存服务的默认交换机
     * @return
     */
    @Bean
    public Exchange stockEventExchange(){
        return new TopicExchange("stock-event-exchange",true,false);
    }

    @Bean
    public Queue stockReleaseStockQueue(){
        return new Queue("stock.release.stock.queue",true,false,false);
    }

    /**
     * 延时队列
     * @return
     */
    @Bean
    public Queue stockDelayQueue(){
        Map<String,Object> args = new HashMap<>();

        /**
         *         arguments.put("x-dead-letter-exchange", "order-event-exchange");
         *         arguments.put("x-dead-letter-routing-key", "order.release.order");
         *         arguments.put("x-message-ttl", 60000);
         */
        args.put("x-dead-letter-exchange","stock-event-exchange");
        args.put("x-dead-letter-routing-key","stock.release");
        args.put("x-message-ttl",120000);
        return new Queue("stock.delay.queue",true,false,false,args);
    }

    /**
     * 跟普通队列的绑定关系
     * @return
     */
    @Bean
    public Binding stockReleaseBinding(){

           return new Binding("stock.release.stock.queue",
                   Binding.DestinationType.QUEUE,
                   "stock-event-exchange",
                   "stock.release.#",
                   null);
    }

    /**
     * 跟延时队列的绑定
     * @return
     */
    @Bean
    public Binding stockLockedBinding(){
        return new Binding("stock.delay.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.locked",
                null);
    }
}
